Method of printing



- J. E. WOODBURY.

METHOD OF PRINTING.

APPLICATION HLED JAN. I6. 1918.

Patented Oct. 14,1919.

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1' n: COLUMBIA PLANOGRAPII c I. E. WOODBURY. METHOD 0F PR|NTING. APPLICATION FILED JAN. 16. 918.

'1 3 1 8, 94: 3 Patenfed Oct. 14, 1919.

2 SHEETS-SHEET Z.

x GRAPH. col, WASHINGTON, n c.

i UNITED- STATES PATENT-OFFICE.

JOHN E. WOODBURY, OF WORCESTER, MASSACHUSETTS.

METHOD or PRINTING.

Toall' whom it may concern.- I

Be it known that I, JOHN E. WooDBunY, acitizen of theUnited States, residing at Worcester, in the county of Worcester and State of Massachusetts, have invented anew and useful Method of Printing of which the following is a specification. I v This invention relates to intaglio printing. It is especially made for the purpose;

of facilitating printing from intaglio plates,

especially on moistened paper. In practice,

I have found that when prmting on mois toned paper from intaglio'plates, containing both illustrations and reading matter,

the .broad cuts in the intaglio plate, especially thosefori'ning the letters, will receive.

continually increasing projections from the soft; blanket as the same is compacted. This tends increasingly to cause the ink to beforced out at the edges of the: cuts and to make inferior work.

One of the objects of this invention is to provide for remedying this difficulty and especially toprovide a method whereby the operator can control the operation. in accordance with the conditions existing.

Further objects of the invention will appear hereinafter.

Reference is to be had to theaccompanying drawings, in which V Figure 1 is aside view of a plate printin press in which this invention can be carried out; i Fig. 2 is a front elevation of the same; Fig, 3 is a side view of a'portio-n thereof on enlarged scale;

Fig.1 4; isa front elevation of the counter on a larger scale than that shown in Fig. 2,

slightly modified Fig. 5 is a horizontal sectional view on the line 5,5 of Fig. 4;"

Fig. 6 is a .plano f part of a modified construction', and I i Fig. 7 is a front elevation of the same also showing the construction illustrated in Figs. 4 and The subject matter illustrated in Figs l to 3, is divided out of my PatentNo. 1,255;

263 granted Feb. 5, 1918, on a counter for inta lio presses, filed July 17, 1913.

The invention isshown in the first three Specification of Letters Patent. Patented 0e1 1919 Application filed January 1s, 1918'. Serial no; 212,010.

figures as carried out on a well lmown type of'intaglio press having a frame 10, drivin shaft 11 and feed mechanism 12 for driving counter is providedwith a second portion 21 which forms a part of the counter, and 1s movably mounted with respect to the mainpart thereof. This is shown as con v sisting of a blanket or the like formed .of suitable blanket material. being mounted; on a rectangular frame 22' which surrounds the counter. This frame is shown as made up of horizontal sides and ends in Fig. 2 butjthey are arranged on edge on thesecond sheet. j This blanket is connected with the frame by clamps 24 which are held by. bolts. s

The blanket and blanket frame "areheldi normally toward one side of the press by a spring 25 whichin this case isshown as also supporting the end of this frame. The tendency of the spring is to force the counterfranie to the right in Figs. 2 and 4.

Connected. with the other end of the frame is .a rod 26 which is pivoted on a crank 27 on a vertical shaft mounted ina bearing 28 on the frame. This shaft tis pro videdl with an arm 29 for operating it. The arms 27 and 29 and the shaft canbe made conveniently of an integral piece of wire bent into the shape shown. The arm 29 is intended to be operated by a link 30 which It is shown as:

is provided'with a stud 31fconnected by a, link 32 with. acrank 33 pivoted on a bracket.

the link and consequently the stud 31 can be raised and lowered. 1

Mounted on the f frame is a stationary plate 35 1 having a V shaped slot v 36 provided with a socket 37 at the top. Pivoted to thls plate on a pivot '89 is a swinging'plate 40.

This swinging plate has a slot 4:1,ithe bottom of which is just wide enoughto receive 34 on the frame. By operating this crank the stud 31 and the top extends as high as the socket 87, which also is just large enough to receive the stud. This plate a0 is connected by a link 42 with'an eccentric a3 on the shaft of the roll 18.

The process is carried out as follows The paper to be printed on is moistened slightly before printing. lVhen the stud 31 is at the bottom of the slot 41, the oscillation of the link -12 causes the plate 40 to oscillate and the link 30 to partake of this motion. This obviously swings the arms 29 and 2", vibrates the rod 26 and the blanket 21 between impressions. If, however, the crank 33 is turned to such a position that the stud 31 is held up on the notch 37 it is freed from the control of the slot 41 and positively prevented from vibrating, although the plate a0 continues to operate as usual.

The purpose of this mechanism is to con trol fully the condition of the blanket and consequently the printing. With the parts in stationary position, it is obvious that the blanket will gradually become hardened on the compressed portions but not in the portions which do not come into contact with the plate but only into the engraved lines thereon. When this action continues to such an extent as to force the ink out of the engraved lines and blur it around the edges the Operator will simply move the crank 33 so as to bring the stud 31 down into the bottom of the slot 11 and then the blanket will vibrate and receive impressions on different portions of these surfaces. This will tend produce a uniform condition of the blanket and then the operator can swing the crank 33 back and allow the printing operation to go ahead with the blanket in its orlginal position until the same conditlon is met with again. WVhen this shifting action first takes place some of the first impressions may not be perfect and it is only after the result has reached a sufficiently high degree of perfection that the parts are secured in inoperative position so as to continue that character of printing. 7

Another form in which the invention can be carried out is indicated in Figs. 6 and 7 In this case the numerals 10, 15, 19, 20, 21, 22, and 26 indicate the same elements as in the other sheet, the frame 22 being shown slightly modifiedasstated above. In this case the rod 26 is connected with a pivoted lever 7 0 which is operated by a movable rod 71 preferably operated by hand. I The other end of the frame 22 is held up by a rod 7 2 clamped on a bracket 73. i

The operator moves the rod 71 whenever the prints begin to blur. This simply moves the blanket over to a second position and it is held there by the friction of the parts until the operator changes it. This arrange ment is provided so that the operator can move the blanket over if in his judgment it needs it either with or without the accompanying vibration thereof.

In this case the operator moves the face of the counter a greater or less distance as he may desire, and it is not necessary to bring it back to its original position as in the form shown on the first sheet.

It has been found in practice that by this method the counter can be kept, by a comparatively unskilled operator, in proper condition for the highest class of printing of this difficult type, namely, the printing of both illustrations and reading matter from the same engraved plate and that the moistening of the paper which has also been found to be advisable does not introduce any complications that are not overcome by this invention. 7 p

VVhile I describe my invention in connection with the production of work of the above character, upon moistened paper, the

invention presents valuable advantages when employed in the production of certain kinds of ordinary die stamping upon dry paper and I do not wish to be limited to the use of my invention on any particular class of intaglio work except as specified in the claims, therefore I do not wish to be limited to the exact procedure described but what I do claim is i 1. The method of printing which consists in moistening sheets, pressing them one after another between a counter and printing plate while the face of the counter is in one position until the impressions begin to; blur and moving the face of said counter to another position between impressions.

2. The method. of printing which consists in moistening sheets, pressing them one after another between a counter and printing plate until the counter shows signs of'hardening, moving the face of said counter between impressions with the face of the counter in that position, taking some impressions,moving the face of the counter to a second position, and continuing to take im-. pressions." y

3. The method of printing'which consists in holding the face of a counter in the same position during a plurality of impressions, then vibrating the face of thegcounter between impressions fora plurality of impressions, and then holding the. counter stationary during a plurality of impressions.

4. The method of printing which consists in vibrating theface of a counter during a plurality of impressions, and thereafter holding the counter stationary during aplurality of impressions.

5. The method of printing which consists in pressing sheets betweena counter and a printing plate, moving the face of said counter between impressions at will and making impressions with said face in the second position until the counter becomes tion, moving the face of the counter back to hardened. the original position and thereafter printing 10 6. The method of printing Which consists more sheets With the face in said original in pressing sheets between a counter and position.

a printing plate, moving the face of the In testimony whereof I have hereunto afcounter after pressing a number of sheets, fixed my signature.

printing an additional number of sheets while the face of the counter is in that posi- JOHN E. WOODBURY.

Women of this patient may be obtained for five cents each, by addressing the Commissioner of Patents.

Washington, D. 0. 

